build(deps): bump github.com/prometheus/client_golang

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 0.9.1 to 0.9.2.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v0.9.1...v0.9.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Gopkg.lock

@@ -258,7 +258,7 @@
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:26663fafdea73a38075b07e8e9d82fc0056379d2be8bb4e13899e8fda7c7dd23"
+  digest = "1:93a746f1060a8acbcf69344862b2ceced80f854170e1caae089b2834c5fbf7f4"
   name = "github.com/prometheus/client_golang"
   packages = [
     "prometheus",
@@ -266,8 +266,8 @@
     "prometheus/promhttp",
   ]
   pruneopts = "UT"
-  revision = "abad2d1bd44235a26707c172eab6bca5bf2dbad3"
-  version = "v0.9.1"
+  revision = "505eaef017263e299324067d40ca2c48f6a2cf50"
+  version = "v0.9.2"
 
 [[projects]]
   branch = "master"

Gopkg.toml

@@ -83,7 +83,7 @@
 
 [[constraint]]
   name = "github.com/prometheus/client_golang"
-  version = "=0.9.1"
+  version = "=0.9.2"
 
 [[constraint]]
   name = "github.com/sirupsen/logrus"